Dahlia plant named ‘Karma Pink Corona’

ABSTRACT

A new and distinct cultivar of  Dahlia  plant named ‘Karma Pink Corona’, characterized by its upright and somewhat outwardly spreading plant habit; strong and erect peduncles; freely flowering habit; decorative-type inflorescence form; large inflorescences with light purple-colored ray florets; and good garden performance and postproduction longevity.

Botanical designation: Dahlia hybrida.

Cultivar denomination: ‘Karma Pink Corona’.

CROSS-REFERENCED TO RELATED APPLICATIONS:

Dahlia Plant Named ‘Karma Red Corona’; Aad W.M. Verwer, applicant; filed concurrently (U.S. Plant Patent Application No. 11/524,393).

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Dahlia plant, botanically known as Dahlia hybrida, and hereinafter referred to by the name ‘Karma Pink Corona’.

The new Dahlia is a product of a planned breeding program conducted by the Inventor in Lisse, The Netherlands. The objective of the breeding program is to create new cut flower Dahlia cultivars that have a freely flowering habit, decorative inflorescence form, attractive ray floret coloration, and good postproduction longevity.

The new Dahlia is a naturally-occurring branch mutation of the Dahlia hybrida cultivar Karma Corona, disclosed in U.S. Plant Pat. No. 13,650. The new Dahlia was discovered and selected by the Inventor from within a population of plants of the cultivar Karma Corona in a controlled environment in Lisse, The Netherlands during the summer of 2002.

Asexual reproduction of the new Dahlia by cuttings since the spring of 2003 in a controlled environment in Lisse, The Netherlands, has shown that the unique features of this new Dahlia are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

The cultivar Karma Pink Corona has not been observed under all possible environmental conditions. The phenotype may vary somewhat with variations in environment such as temperature and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘Karma Pink Corona’. These characteristics in combination distinguish ‘Karma Pink Corona’ as a new and distinct cultivar of Dahlia:

-   -   1. Upright and somewhat outwardly spreading plant habit.     -   2. Strong and erect peduncles.     -   3. Freely flowering habit.     -   4. Decorative-type inflorescence form.     -   5. Large inflorescences with light purple-colored ray florets.     -   6. Good garden performance and postproduction longevity.

Compared to plants of the parent, the cultivar Karma Corona, plants of the new Dahlia differ primarily in ray floret color as plants of the cultivar Karma Corona have golden orange-colored ray florets. In addition, plants of the new Dahlia are shorter than plants of the cultivar Karma Corona.

Compared to plants of the cultivar Karma Red Corona, plants of the new Dahlia differ primarily in ray floret color as plants of the cultivar Karma Red Corona have red-colored ray florets. In addition, plants of the new Dahlia are shorter than plants of the cultivar Karma Red Corona.

Plants of the new Dahlia can be compared to plants of the Dahlia cultivar Witteman's Best, not patented. In side-by-side comparisons conducted in Lisse, The Netherlands, plants of the new Dahlia differed from plants of the cultivar Witteman's Best in the following characteristics:

-   -   1. Plants of the new Dahlia were shorter than plants of the         cultivar Witteman's Best.     -   2. Plants of the new Dahlia and the cultivar Witteman's Best         differed in ray floret color as plants of the cultivar         Witteman's Best had red-colored ray florets.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph illustrates the overall appearance of the new Dahlia. The photograph shows the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photograph may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Dahlia. The photograph comprises a side perspective view of typical flowering plants of ‘Karma Pink Corona’ grown in an outdoor nursery.

DETAILED BOTANICAL DESCRIPTION

In the following description, color references are made to The Royal Horticultural Society Colour Chart, 1995 Edition, except where general terms of ordinary dictionary significance are used. The following observations and measurements describe plants grown in Lisse, The Netherlands during the summer in an outdoor nursery and under conditions and practices which approximate those generally used in commercial Dahlia production. During the production of the plants, day temperatures ranged from 15° C. to 30° C. and night temperatures ranged from 10° C. to 20° C. Plants were pinched one time about three to four weeks after planting. Measurements and numerical values represent averages for typical flowering plants. Plants were about four months old when the photograph and description were taken.

-   Botanical classification: Dahlia hybrida cultivar Karma Pink Corona. -   Parentage: Naturally-occurring branch mutation of the Dahlia hybrida     cultivar Karma Corona, disclosed in U.S. Plant Pat. No. 13,650. -   Propagation:     -   -   Type.—By cuttings.         -   Time to initiate roots, summer.—About ten days at             temperatures of about 18° C.         -   Time to initiate roots, winter.—About twelve days at             temperatures of about 18° C.         -   Time to produce a rooted young plant, summer.—About 24 days             at temperatures of about 18° C.         -   Time to produce a rooted young plant, winter.—About 27 days             at temperatures of about 18° C. to 20° C.         -   Root description.—Fine to fleshy; tuber development has not             been observed.         -   Rooting habit.—Freely branching; dense. -   Plant description:     -   -   Plant form/growth habit.—Upright to somewhat outwardly             spreading; inverted triangle plant form. Freely basal             branching with about eight lateral branches and             inflorescences held above the foliage on strong peduncles;             bushy and dense. Moderately vigorous growth habit.         -   Plant height.—About 90 cm.         -   Plant diameter or spread.—About 40 cm.         -   Lateral branches.—Length: About 70 cm. Diameter: Towards the             base, about 1.3 cm; towards the apex, about 2 mm. Internode             length: About 5 cm to 17 cm. Aspect: Erect to somewhat             outwardly spreading. Strength: Strong. Texture: Smooth,             glabrous. Color: 144B; towards the apex, tinted with 187A. -   Foliage description:     -   -   Arrangement.—Leaves opposite; leaves may be single or             compound with three or five leaflets.         -   Shape.—Ovate.         -   Apex.—Acuminate.         -   Base.—Attenuate.         -   Margin.—Serrate and divided; sinuses divergent.         -   Length.—Single leaves: About 5 cm. Compound leaves with             three leaflets: About 14 cm. Compound leaves with five             leaflets: About 21 cm.         -   Width.—Single leaves: About 3.5 cm. Compound leaves with             three leaflets: About 9 cm. Compound leaves with five             leaflets: About 14 cm.         -   Venation pattern.—Pinnate.         -   Texture, upper and lower surfaces.—Smooth, glabrous.         -   Color.—Developing foliage, upper surface: 146B. Developing             foliage, lower surface: 147B. Fully expanded foliage, upper             surface: 147A; venation, 146D. Fully expanded foliage, lower             surface: 147B; venation, 146A.         -   Petiole length.—Single leaves: About 0.7 cm. Compound leaves             with three leaflets: About 3 cm. Compound leaves with five             leaflets: About 5 cm.         -   Petiole diameter.—Single leaves: About 3 mm. Compound leaves             with three leaflets: About 3 mm. Compound leaves with five             leaflets: About 3 mm.         -   Petiole texture, upper and lower surfaces.—Smooth, glabrous.         -   Petiole color, upper surface.—143C tinted with 60A.         -   Petiole color, lower surface.—Close to 160D. -   Inflorescence description:     -   -   Appearance.—Rotate single inflorescence form with ray and             disc florets. Inflorescences positioned above the foliage on             strong peduncles. Inflorescences face upright to slightly             outwardly. Freely flowering habit; about 40 inflorescences             develop per plant. Inflorescences persistent. Inflorescences             not fragrant.         -   Time to flower.—Plants flower continuously during the summer             and autumn in The Netherlands.         -   Post-production longevity.—Good postproduction longevity;             inflorescences maintain good substance for about 25 days on             the plant and for about one week as a cut flower.         -   Inflorescence bud.—Height: About 2.2 cm. Diameter: About             2.2 cm. Shape: Oblate to globular. Color: 151B.         -   Inflorescence size.—Diameter: About 14 cm. Depth (height):             About 10 cm. Disc diameter: About 1.3 cm. Receptacle height:             About 4 mm. Receptacle diameter: About 2.2 cm.         -   Ray florets.—Length: About 6.5 cm. Width: About 1.5 cm.             Shape: Ovate to lanceolate. Apex: Acute. Base: Attenuate.             Aspect: Initially upright to roughly perpendicular to the             peduncle to reflexed; flat or recurved. Texture, upper and             lower surfaces: Smooth, glabrous; satiny. Number of ray             florets per inflorescence: About 108 arranged in about             twelve whorls. Color: When opening, upper surface: Center,             75B; towards the apex, 74A; towards the base, 1C. When             opening, lower surface: 78A; towards the margins, 69B. Fully             opened, upper surface: 73A; toward the base, 15A. Fully             opened, lower surface: 73B: towards the base, 8A.         -   Disc florets.—Shape: Tubular; apex dentate. Length: About             1.3 cm. Diameter, apex: About 2 mm. Diameter, base: About             2 mm. Number of disc florets per inflorescence: About 37.             Color: Immature: 7A. Mature: Apex: 21B. Mid-section: 23A.             Base: Close to 1A.         -   Phyllaries.—Quantity per inflorescence: About seven arranged             in a single whorl. Length: About 2.1 cm. Width: About             1.7 cm. Shape: Ovate. Apex: Acute. Base: Attenuate. Margin:             Entire. Texture, upper and lower surfaces: Smooth, glabrous;             satiny. Color, upper surface: 144A. Color, lower surface:             144A tinted with 187C.         -   Peduncles.—Length: Terminal peduncle: About 70 cm. Fourth             peduncle: About 23 cm. Diameter: Towards the base, about 1.3             cm; towards the apex, about 4 mm. Strength: Strong. Aspect:             Erect to about 10° from vertical. Texture: Smooth, glabrous.             Color: 144B; towards the apex, tinted with 187A.         -   Reproductive organs.—Androecium: Quantity per disc floret:             Five. Anther shape: Linear. Anther length: About 7 mm.             Anther color: 16A. Pollen amount: Scarce. Pollen color: 21B.             Gynoecium: Quantity per ray or disc floret: One. Pistil             length: About 3 mm. Stigma shape: Lanceolate. Stigma color:             Close to 12B. Style length: About 3 mm. Style color: 150B.             Ovary color: 8A. Seeds: Length: About 1.1 cm. Diameter:             About 2.1 mm. Color: 199B. -   Disease/pest resistance: Plants of the new Dahlia have not been     shown to be resistant to pathogens and pests common to Dahlia. -   Garden performance: Plants of the new Dahlia have exhibited good     tolerance to rain and wind and have been observed to tolerate     temperatures from about 0° C. to about 35° C. 

1. A new and distinct Dahlia plant named ‘Karma Pink Corona’ as illustrated and described. 